In general,a typical （）model is composed ofseveral phases, such as requirements analysis phase, general/detailed design phase, implementation phase, system acceptancetesting phase.

A．waterfall

B．incremental

C．spiral

D．prototyping

对于认知和技能领域的学业，最常用的教学评价手段是标准化的成就测验和（）。

A.教师随堂评价

B.教师自编测验

C.随堂考试

D.课堂提问测验